Trumbo has been sidelined since late April with a foot injury. Over 81 at-bats, he's hitting .210 with seven home runs. He'll face off against Tim Lincecum in his return.
Lutz will fill in for Skip Schumaker, who was placed on the disabled list Friday. Lutz has hit .154 over 13 at-bats in the majors this year.
The club will call up Donald Lutz to take his place on the active roster. Schumaker is hitting .240 over 146 at-bats.
The Seattle Times reports that
Saunders was placed on the 15-day disabled list Friday with the injury. Saunders is expected to need more than the 15 days on the DL. He is hitting .276/.329/.436 with six homers and 28 RBI in 196 at-bats.
Ramirez is expected to miss some time due to a shoulder injury, so the move shouldn't come as a surprise. He's not expected to play until after the All-Star break. Ramirez is hitting .275/.369/.467 over 291 at-bats.
Medica is dealing with a groin injury. He had to leave Thursday's game due to the issue. Jake Goebbert will get the start at first base with Medica out. Medica is hitting .230 over 122 at-bats.
Kieschnick was sent down in order to make room for Mark Trumbo. Trumbo had been out since late April with a foot injury, but is ready to return. Kieschnick hit .207 over 29 at-bats in the majors.
Trumbo hasn't played since late April due to a foot injury. Prior to going on the DL, Trumbo hit .210/.264/.506, with seven home runs.